Yes. Adding "narco-" in front of any previous leader or official the author apparently doesn't like doesn't do much to help with clarity.
Hard to tell what's going on from this article in that the author seems so biased against Prospera. Sounds like they made an agreement with one government that for various reasons lost power and that the new government wants to cancel the deal.
You can argue how often "narco-" should be used, but it's more than just someone "the author apparently doesn't like". The ex-president and his brother are literally convicted drug traffickers.
Hard to tell what's going on from this article in that the author seems so biased against Prospera. Sounds like they made an agreement with one government that for various reasons lost power and that the new government wants to cancel the deal.